Machine for the manufacture of wooden pins or pegs.



G. LUMELLO. 1

MACHINE FOR THE MANUFAGTURB OF WOODEN PINS 0R PEGS.

APPLIUATION FILED JUNE 29, 1911.

2 SHEETS-SHEET 1.

Fig.1

Witnesses:

. In entor:

Patefited June 11, 1912.

0. LUMELLO. MACHINE FOR THE MANUFACTURE OF WOODEN PINS 0R PEGS.

APPLICATION FILED JUNE 29, 1911.

- Patented June 11, 1912.

Z SHEETS-SHEET 2.

Fig. 4 18 Witnesses:

% 9 lnvmtorf torney.

COLUMBIA PMNOGRAPH 50., WASHIN ON. D. C.

UNITED STATES PATENT OFFICE.

CARLO LUlVIELLO, 0F TURIN, ITALY, ASSIGNOR OF ONE-HALF T0 FRANCESCO FRANCO,

' 0F TURIN, ITALY.

MACHINE FOR THE MANUFACTURE OF WOODEN PINS 0R IPEGS.

To all whom it may concern:

Be it known that I, CARLO LUMELLO, a subject of the King of Italy, residing at Turin, Italy, have invented certain new and useful Improvements in Machines for the Manufacture of WVooden Pins or Pegs, of which the following is a specification.

This invention relates to a machine for the manufacture of wooden pins or pegs used in joinery and generally for the assembling of wooden structures, and consists essentially in this that the piece of wood advancing in the direction of its grain is submitted simultaneously to the action of several cutters which are so arranged as to give the peg the desired conicity.

In the annexed drawing, which shows by way of example one embodiment of a machine according to the present invention, Figure 1 is a plan, Fig. 2 a longitudinal sect-ion, Fig. 3 a lateral view, Fig. 1 shows one pair of cutter holders with the device for adjusting the distance apart of their ends, to which the knives or cutters are secured. Fig. 5 is a rear end view of the knife carrier. Fig. 6 shows the front end to which the cutters are secured. Fig. 7 shows the arrangement for mounting the knife holders. Fig. 8 shows the device for exactly centering the piece from which the pegs or pins are to be formed, before it comes into contact with the knives. Fig. 9 shows diagrammatically the feeding device. Figs. 10 and 11 show respectively front and lateral views of a peg.

As shown in Figs. 1 to 3, the machine comprises a body 1 on which is mounted a driving shaft 2, operated by means of a pulley 3 and provided with a flywheel 4c. On'the crank 5 is mounted a connecting rod 6 which at its other end is connected to a carriage 7 which operates by its movement the whole of the machine. The carriage 7 is loosely mounted on the body 1, for example, by means of a cylindrical rod 8, secured to the carriage and bearing on the wheels 9, 9, pivoted on the fixed part of the machlne, and of a support 10.

The rod 8 is integral with the head 11 carrying the spindle 12 intended to push the piece of wood against the knives.

Specification of Letters Patent.

Application filed June 29, 1911.

Patented June 11, 1912. Serial No. 636,087.

The cutting mechanism is constituted, in the form shown, by two pairs of supports 18, (Fig. 4), arranged at an angle of 90 de grees around the central axis coinciding with the axis of the spindle 12.

Each support 13 has at its forward end a fork in which is introduced the cutter 14 (Fig. 6), and is pivoted at 15 on a part 16, which, in its'turn, is pivoted in a block 17 mounted on the machine by means of straps 18 (Fig. 7).

The rearward ends of the supports 13 are provided with wheels 19 intended to run on the rods 20 mounted all around the rod 21 solid with the carriage 7 in such manner as to be able to easily regulate the position. To this end the rod 21 is provided with a projection 22 on which bears or are pivoted the rods 20 while onv the threaded portions of the said rod 21 are arranged screw threaded sleeves 23, the rims of which form a bearing for the rods 20 and fix the positionmore or less inclined corresponding to the position which the sleeves 23 are caused to take on the rod 21.

The knife holders 13 are connected together by springs 24L for the purpose of maintaining the wheels 19 in contact with the rods 20 and are connected at fixed points to the machine by means of springs 25 in the manner shown in Fig. 5 for the purpose of bringing them into their normal position.

The edges ofthe cutters have the form shown in Fig. 6, that is to say, each presents a lateral projection 14: so that the section of the space comprised between the knives is round and not quadrangular.

For keeping the piece of wood exactly centered when advancing against the knives under pressure of the spindle 12, there is arranged in front of the 'edges of the knives, blocks 27, mounted in a suitable manner on a supporting disk 26 and pressed toward the center by springs 28 (Fig. 8).

The automatic feeding device is composed of an endless band 29, (Fig. 9), mounted on two pulleys 30' transversely of the machine and provided with small partitions 31 leaving between them a space sufficient to receive one of the pieces of wood from which the pegs are to be formed. The progress of this hand must take place intermittently at each stroke of the spindle 12; and for obtaining such movement any suitable mechanism may be employed, for instance, arod 32 adapted to move along one edge of the band and connected to the lever 33 pivoted at at on the body of the machine.

The head 11 causes, at theend of the movementtoward the right (Fig. 1), the oscillation of the lever 33, which effects a displacement of the rod; this latter being provided with a pawl 35, which, catching on the partitions 31, causes the endless band to advance. It is advisable that the wheels 30, on which is mounted'the band 29', should be braked in order to prevent it from advancing more than is necessary.

The operation of the machine is as follows: There are placed in the spaces of the feeding device the pieces of wood of nearly uadran ular section, obtained by splitting strips of wood of the necessary width in the direction of the grain. The rotation of the shaft 2 first causes a movement of the car- (Fig. 1), so that the lever 33 struck at its end by the head 11 causes the feeding device to advance one notch. During the successive movement of the head 11 toward the left, the spindle 12 enters into a space of the feeder and the piece of wood which it contacts with therein is pushed against the edge of knives 1a in passing through the center ing blocks 27, each of which may give a little to the irregularities of the piece of wood. At the same time as the portion to be operated on advances against the knife on account of the pressure ofthe spindle 12, the carriage 7 effects the movement toward the left of the rod 21 as well as the rods 20 which will have been previously provided with an inclination corresponding to the dimensions and to the bevel of the pegs to be produced. It will be understood that when the rods 20 slide under the wheels 19 they remove from the center the rear ends of the knife holders 13 and consequently the knives l4: draw near to each other and decrease progressively the section of the peg. The drawing near of a knife to the axis of the peg renders necessary a slight lateral oscillation of the adjacent knife and this oscillation is permitted by the mounting of the knife holders 13 on the members 16 pivoted in the block 17 as shown in Fig. 7. During the return movement the knife hold ers retake their normal position and the feeding device, advancing in the manner described, brings another piece of wood into position to be pushed against the edges of the knives by the spindle 12. If it isdesired to modify the section or the bevel of the pegs, it suifices to axially displace the sleeves 23 on the rod 21 integral with the carriage 7 as naturally in this manner the 1 having in general the form shown in Figs.

10 and 11, are ready for any appllcatlon.

lVhat I claim and desire to secure by Letters Patent of the United States is 1. In a machine for the manufacture of wooden pins or pegs, the combination of a reciprocating spindle for pushing the wooden piece from which the peg is to be formed, knives pivoted toa frame and arranged around the central aXis, blocks for centering said wooden piece during its ad vancenient, rods connected to the reciprocating spindle and intended to slide under the rear ends of the knife-holders and means for adjusting the inclination of said rods with regard to the central axis and the approaching of the edges of the knives to each other during the advancement of said wooden piece. I I p 2. In a machine for the manufacture of wooden pins or pegs, the combination of a reciprocating spindle for pushing the wooden piece from which the peg is to be formed, knives pivoted on supports capable of lateral oscillation and arranged around the central axis, blocks for centering said wooden piece during its advancement, rods connected to the reciprocating spindle and intended to slide under the rear ends of the knife-holders and means for adjusting the inclination of said rods with regard to the central aXis and the approaching of the edges of the knives to each other during the advancement of said wooden piece.

3. In a machine for the manufacture of wooden pins or pegs, the combination of a reciprocating spindle for pushing the wooden piece from which the peg is to be formed, knives pivoted to supports capable of lateral oscillation, and arranged around the central axis, blocks for centering said wooden piece during its advancement, rods 7 carried by a central rod connected to the reciprocating spindle and intended to slide under the rear ends of the knife holders, these rods being pivoted at a point intermediate between their ends, and sleeves adjust-able on said central rod, on which the.

ends of said rods rest.

4. In a machine for the manufacture of wooden plns or pegs, the combination of a reciprocating spindle for pushing the these rods being pivoted in a point intermediate between their ends, and screw threaded sleeves adjustable on the central rod, on the rim of which the ends of said rods rest.

5. In a machine for the manufacture of wooden pins or pegs, the combination of a reciprocating spindle for pushing the wooden piece from which the peg is to be formed, knives pivoted to supports capable of lateral oscillation and arranged around. the central axis, blocks for centering said wooden piece during its advancement, springs pushing said blocks against the side faces of said wooden piece, rods carried by a central rod connected to the reciprocating spindle and intended to slide under the rear ends of the knife holders, these rods being pivoted at a point intermediate between their ends, and sleeves adjustable on said central rod, on which the ends of said rods rest.

6. In a machine for the manufacture of wooden pins or pegs, the combination of a reciprocating spindle for pushing the wooden piece from which the peg is to be formed, knives pivoted to supports capable of lateral oscillation and arranged around the central axis, springs for keeping said knives away from the axis and with the side of each other against the inner face of each other, blocks for centering said wooden piece during its advancement, rods carried by a central rod connected to the reciprocating spindle and intended to slide under the rear ends of the knife holders and means for adjusting the inclination of said rods.

7. In a machine for the manufacture of wooden pins or pegs, the combination of a reciprocating spindle for pushing the wooden piece from which the peg is to be formed, knives pivoted on supports capable of lateral oscillation and arranged around the central axis, blocks for centering said wooden piece during its advancement, an endless feeding device arranged crosswise in front of said blocks and provided with partitions parallel to the reciprocating spindle between which the wooden pieces are arranged, means for operating intermittently said device before the advancement of the reciprocating spindle, rods carried by a central rod connected to the reciprocating spindle and intended to slide under the rear ends of the knife holders and means for adjusting the inclination of said rods.

In testimony whereof Iaflix my signature in presence of two witnesses.

CARLO LUMELLO. lVitnesses:

CARLO TORBOY, JOOELYN GOUBEYRAN.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents. 'Washington, D. G. 

